Sash lock



1-. A. BROWN.

SASH LOCK.

APPLICATION FILED JULY 22,1920.

1 4i@3,l4r io Patented Jan. 10, 1922.

JOHN A. BRGWN, OF DALLAS, TEXAS.

SASH LOOK.

Application filed July 22, 1320.

2 '0 all w 7mm it may concern Be it known that 1, JOHN A. BROWN, acitizen of the United States, residing at Dallas, in the county ofDallas and State of Texas, have invented certain new and usefulImprovements in Sash Locks, of which the following is a specification.

This invention relates to new and useful improvements in sash locks.

The object of the invention is to provide a sash lock carried by thelower window sash in position to engage the side rail of the upper sashand equipped with an operating element at a point removed from thecasing, sufficiently for convenient operation. Another aim is to producea sash lock as well as means for preventing rattling of the sashes.

in carrying out the invention a longitudinally movable locking bolt ismounted in a rotatable element. A rotatable operating element isdisplaced. laterally from the bolt and is connected with the rotatableelement for operating the same. By this arrangement the bolt may operateclose to the window casing, while the operating element may be locatedat a point convenient to perate.

The invention will be more readily understood from a reading of thefollowing specification and by reference to the accompany ing drawings,in which an example of the invention is shown, and wherein:

Fig. 1 is a partial elevation of a window showing a lock constructed inaccordance *ith my invention in position thereon.

Fig. 2 is a horizontal sectional view on the line 22 of Fig. 3,

Fig. 3 is a longitudinal sectional view on the line 33 of Fig. 2,

Fig. 4|: is a cross-sectional detail on the line 4& of Fig. 2, and

Fig. 5 is a cross-sectional detail on the line 5-5 of Fig. 2.

In the drawings the numeral designates a rectangular casing havingprovision whereby it may be fastened on top of the lower sash A of awindow. Near one end the easing is provided with a bearing ring 11receiving one end of a sleeve or cylinder 12 disposed transversely ofthe casing. The other end of the cylinder is supported in a bearing seat13 formed in a collar 14 formed integral with the side of the casing. A.locking bolt 15 is disposed in the cylinder and is provided with asquare end 16, the cylinder Specification of Batters Patent.

Serial No. 398,269.

having an elongated guide way 17 receiving the end 16. By thisarrangement the bolt may slide axially but cannot rotate in thecylinder, thus the bol is revolved by the cylinder.

The outer end of the bolt is screw threaded at 15 and engages in thecollar 14 which is screw threaded to receive the bolt. By revolving thecylinder, it will be seen that the bolt will be screwed through thecollar and moved longitudinally. A screw threaded keeper 18 iscounter-sunk in the side rail B of the upper sash and is positioned toreceive the end 15 of the bolt.

For. revolving the cylinder l mount a pair of sprockets 19 on the same.These sprockets are driven by endless chains 22 from sprockets mountedon a transverse shaft 21. The

shaft projects from the casing and has a thumb button 23 fastened on itsend, whereby the shaft may be revolved. For taking up the slack in thechains idler sprockets 24 are engaged with the same intermediate theirlengths. The sprockets 24 are mounted on a counter shaft 25 supported inthe casing.

It will be seen that the casing 10 may be mounted so that the bolt 15will engage the keeper 18 in the rail B of the upper sash at a pointcloser to the window frame; while the thumb button 28 may be located asuilicient distance from the window frame to enable it to be readilygrasped and turned. It will be seen that if the thumb button wasfastened directly on the bolt, it would be so close to e v a. .indowframe as to prevent a proper operation and one could not get asuiiicient hold on it, to tighten the lock. When the bolt enters thekeeper 18 the sashes will be drawn together and thus the sashes will notonly be locked against up and down movement, but will be fastenedtogether and held tightly in their guide ways. whereby rattling will bepreventet.

What I claim, is:

1. In a sash lock, a casing, a locking bolt disposed transversely oi thecasing, said bolt havi -g a screw threaded end, an internally screwthreaded keeper, and means oil set laterally from the bolt havinoperative connection with the same for screwing the 2. in a sash look, acasing, a locking bolt movable transversely of the casing, a keeperreceiving the end of the bolt, a cylinder surrounding the bolt, anoperating member oilset laterally from the cylinder, and means operatedby the member for revolving the cylinder.

8. In a sash lock, a casing having a screw threaded opening, a lockingbolt having a screw threaded end engaging in the opening of the casing,a screw threaded keeper receiving the bolt, a cylinder surrounding thebolt, said bolt being free to slide longitudinally in the cylinder butconfined against ro tation therein, a sprocket mounted on the cylinder,a shaft mounted in the casing, a sprocket mounted on the shaft, a chainconneoting the sprockets, and a thumb member on the shaft outside of thecasing.

4:. In a sash look, a casing, a locking bolt movable transversely of thecasing, a keeper receiving the end of the bolt exteriorly of the casing,revoluble means surrounding the bolt for moving the latter transverselyinto the keeper, and a laterally off set operating member havingconnection With the revoluble means for operating the latter.

In testimony whereof I atfix my si nature.

' JOHN A. BRdWN.

